Sight device for firearms.



A. SWASEY.

SIGHT DEVICE FOR FIREARMS. APPLICATION FILED JUNE 8, 1908. I

Patented Dec. 15,1908

3 SHEETS-QHBET 1.

' Witnesses;

A. SWASEY. .SIGHT DEVICE FOR FIREARMS. APPLICATION FILED JUiWE 8, 1908.

' 3 SHEETS-88331312.

Witnesses:

Vigm

UNITE SIGHT DEVICE FOR FIREARMS.

Specification of LetterwPatent.

STATES PATENT OFFIGE.

AMBROSE SWASEY, OF CLEVELAND, OHIO, ASSIQNOR TO THE WARNER & SWASF'Y COMPANY,-

I OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

Iatented Dec. is, 1908.

Application filed June 8, 1908. Serial No. 437,275.

T0 all t'vhom it may concern:

Be 1t known that I, AMBROSE SwnsE'Y, a

citizen of the United States, residing in Cleve.-

land, in the. county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Sight Devices for Firearms, of which the following is a specification.

This invention appertains to sighting devices, and is especially designed for rifles qr muskets'.

One. of the objects of the invention is to provide an improved form of sight device of this character, wherein an index member or head will have its graduations approximately uniformly spaced, corresponding to the different elevations, and by the substantially equal movement of this headfor the different elevations, the sight will be given a varied angular swing, as is necessary for the difl'erent elevations.

A further object of the invention is to pro vide means for swinging the sight device on its support, in which there will be a positive movement to the swinging member in both directions to prevent any free movement of the sight device from the recoil oi the gun,

and at the same time the engaging member connected with the sight will beretained in engagement with the surface or cam that effects its movement.

A further ob'ect of .the invention is to provide a supplementary swing of the sight device for the purpose of collimation of the instrument, both initial and for the purpose of readjustment after use.

An object of the invention is toprovide in addition to the swing of the sight device for elevation, a construction whereby the sight device can be swung on a vertical axis for windage or drift.

In the accompanying drawings representing embodiments of my invention, Figure 1 is a side elevation of'the device. I Fig. 2 is a section on the line 2-2 indicated in Fig. Fig. 3 is a plan view. Fig. 4 is a section on the line 44 indicated'in Fig. 1. Fig. 5 is a vertical section enlargedshowing the support and the lever, and the engaging portion of the sight member. Fig. 6 is a side elevation of the support, also showing the lever spring. Fig. 7 is a planview of the support,

showing the trunnion portion of the lever.

Fig. 8 is an end view of thesupport indicating the attachment to the firearm. Fig. 9 is a vertical section on the line 9-9 indicated in Fig. 6. Fig. -10 shows the lever in plan, with the screw and tooth member for. swinging the sight member on the lever shown in section. Fig. 11 is a section on the line 1111 indicated in Fig. 6. Fig. 12' is a vertical section enlarged through the shell of the sight device. Fig. 13 is a transverse section on the line 1313 indicated in Fig. 12. Fig. 14 is a vertical section through the removable prism holder, the prisms being shown in plan. Fig. 15v is an end view of the holder shown in Fig. 14. Fig. 16 is a bottom plan view of the holder shown in Fig. 14. Fig; 17 is a view of the inner side of the index member. Fig. 18 is a transverse section through the index member on the line 18.18 indi cated in Fig; 17. Fig. 19 shows the bar for securing the support to the firearm, and Fig. 20 is an end'view of the bar shown in Fig. 19.

The device is shown as comprising essentially three members; a su port, a sighting member or telescope, and a Fever, that is pivoted on the support, and to which the sighting member is adj ustably secured. The support denoted generally by A, is shown separately in Fig. 6, and also in Fig. 7 with the If desired, the sup ort may be adjustable.

along the bar, and ocked in diiierent positions by having a detent 23v pressed by spring 24 into notches 25 in the bar 22, as 1nicated in Fig. 11.

The support A carries a spindle portion 26 on which swings the trunnion portion 27, of the lever B. A washer 28 holds the trunnion on the shaft, being locked by a cotter-pin 29. The sighting member or telescope denoted generally by C, is secured. to the lever B, and by rocking the lever on its trunnion support, the sighting device will swing through a vertical plane, to adjust for different elevations.

'lhefranie member A carries a spindle 30, on which turns an index member 3 1, engaging the spindle by its bore The index mem ber has a cam portion 33 that engages 3. lug 34 on the lever B. This lug is pressed against the cam by a spring 35, shaped somewhat like an open cotter-pin, havmg an eye '36 passing around a lug 37, on the support A. One end of the s ring engages the frame member at 38, wh' e the other end engages a range; winch lug 39 on the lever and against the cam. But preferably a second cam surface is provided opposite said cam, and spaced therefrom a distance about equal to the diameter of the pin 34,- thereby forming a cam slot. This is to prevent undue vibration of the lever from the recoil of the gun, which might follow if a single cam surface were used. The spring tends to retain the pin against the inner cam wall and accuracy of adjustment results by this constant engagement. The front of the index member is provided with graduations ad jacent its margin as shown in Fig. 1, the grai u ations being substantially equally spaced, and corresponding indications are placed thereon, each space representing twenty yards of range. And the cam is shaped or plotted to swing the sighting member on the trunnion axis the necessary amount for each will be a variable amount of swing. This has great advantages over the former methods of swinging the telescope by means of a screw, as equal amounts of rotative movement would not give the proper swing to the telescope for different range adjustments. -An index pointer 40 on the support registers with the graduations on the 111( ex presses the lug 34 The sighting device C is shown as adjustable on the lever for winda e or drift, and swings on an axis erpendicu ar with the axis of the lever B. he sighting device or telescope member f. has an aperture 41. in its lower portion in which swin s a pivot member 42, having a retaining col ar 43 on its end portion. The pivot is threaded, and screws in a threaded bore 44 in the rear end of the lever B, and a lock-nut 45 serves to clamp the screw in adjusted position on the lever. The lever B has an extension 46 carrying a tubular arm 47, in whose bore rotates a screw member 48 having a head portion 49 at one end, and a locking collar 50 at the other end reventin endwise movement of the screw.

11 the to escope member C, is an extension 51 that contains teeth in the nature of a gear segment centered in pivot 42; which teeth mesh with the thread of the screw 48. These two members upon rotation of the screw have the function of a worm and worm-wheel, the screw corresponding to a worm, and the segment to aworm wheel. Therefore, when the screw is turned, the telescope member will swin on the pivot member 42. The screw mem )er has on its head/19 a boss 53, on which is sli p)ed an annular index disk 54, that is secure y a retaining disk 55 apertured for the assage of locking screws 56, tapped into the end. By this means the index disk can be set to the proper position and then clamped by the screws. This index is provided with graduations as shown in Fig. 1 that register with a ointer 57. A lug 58 on the back of the dis permits a limited turning in bothdirections from the zero position. By turnin the index member, that is preferably provided with a milled edge, the telescope member can be swung to either side of the normal position, to allow for windage or drift in sighting the firearm.

The vertical adjustment of the telescope is effected by turning the index member 31 to swing the lever B as has been set forth. But for the purpose of collimation of the telescope, either initial when first constructed, or to take up for wear in the parts or distortion from the use of the gun, an adjustment of the telescope on the lever is ob-- tainedby means of 1c pivot screw 42. By loosening the lock nut45 and slightly turning the )ivot screw 42, the telescope will swing on the axis of the screw or worm 48, it being elevated or depressed by engagement with this pivot screw; it very slight amount of play being provided in the hearing at the bottom of the telescope for the pivot member. Then the lock-nut is screwed up tight to secure the screw in adjustml position.

Any desired form of a sighting member or telescope may be used in the device. n the construction shown the telescope is of the type using Porro prisms to offset the objective from the eye-piece. The telescope is shown as provided with an eye-piece lens 60 and an objective 61. .The lorro prisms are carried by a holder member 62, consisting of double risms 6.. and 64, causing the optical axisto )e four times deflected through ninety degrees.

Having thus descrilu-zd my invention, I claim:

1. in a sighting device for firearms, a support for attachment to the firearm, a lever pivoted on the support, a rotary index memher on the support arranged to swing the lever, a cam member secured to the index member and engaging and a sighting member mounted on said lever for adjustment on an axis parallel with the axis of the lever.

2. In a sighting device for firearms, a support for attachment to the firearm, a lever pivoted on the support, a rotary index memher on the su )port arranged to swing the lever, and a sighting member mounted on said a portion of said lever,

lever to swing on an axis perpendicular to r the axis of the lever, the sighting member being also mounted for adjustment on the lever on an axis parallel with the axis of the lever.

3. In a sighting device for firearms, a support for attachment to the firearm, a lever ivoted on the support, a rotary index member on the support arranged to swing the lever, a sighting member mounted on said lever to swing thereon on an axis perpendicular to the axis of the lover, a screw member carried by the lever, a toothed member carried by the sighting member engaging said screw whereb the sightingmember-can be swung on sai axis. by the screw, and

" means for also swinging the sighting member on an axis transverse to its said axis of movement on the lever.

4. In a sight for firearms, a'frame member for attachment to the firearm, a'lever pivoted on the frame member to swing in a hon-- zontal axis, means to swing the lever, a sight member, a pivot member connecting the sight member and said lever,- a screw rotatably carried by the lever and prevented from endwise movement, a toothed member carried by the sight member and engaging; the

screw to swing the sight member on ts pivot oted on the frame member to swing in a horizontal axis, means for swinging the lever, a sight' member, a pivot member connecting the si tatabfiy carried by the lever and revented from endwise movement, a toothe member carried by the sight member and engaging the screw to swing the sight memberon its pivot upon rotation of the screw, said pivotmember being vertically adjustable on the lever to swing the sight member on the axis of said screw, an index carried by said screw,

' and a pointer on the lever registering with said index.

6. In a sight for firearms, a frame for attachment to the firearm, a lever pivoted to the frame, an index pivoted on the frame andprovided with a cam slot, a lu on the lever ridin in said slot, a sight mem er carried by said ever, and a sprin carried by thesupport and enga ing the ever to press the lug against one wall of the cam member. 1

7. In a sight for firearms, a frame for attachment to the firearm, a lever pivoted to the frame, an index pivoted on the frame and provided with a cam, a lug on the lever engaging the cam, uniform graduations on the index member, a sight member carried by said lever, the cam member being shaped to swing the lever according to the uniform graduations on the index, a pivot member connecting the sight member and said lever,

a screw rotatably carried by the lever and prevented" from endwise movement, and a toothed memb'er carried by the sight member and engaging the screw to swing thesight ht member and said lever, a screw romember on its pivot upon rotation of the screw, sai' pivot member being vertically adjustable on the lever to swing the sight member on the axis of said screw.

8. In a sight for firearms, a frame for attachment to the firearms, a lever pivoted to the frame, an index ivoted on the frame provided with a cam s ot, a lug onthe lever riding in said slot, a spring carried by the support and engaging t e lever to press the lug against one wal of the cam, uniform graduations on'the index member, a sight member carried by said lever, the cam member being shaped to swing the sight accordingto the uniform graduations on the index, a pivot member connecting-the sight member and said lever,,a screw rotatably carried by the lever and prevented from endwise movement, a nut member carried by the sight member and engaging the screw to swing the sight member on its pivot u on rotation of the screw, said pivot member eing vertically adjustable on the lever to swing the sight member on the axis of said screw.

9. Ina sighting device for firearms, a sup- .port for attachment to the firearm, a lever pivoted on the support, a rotary index memer on the support arranged to swing the lever, a sighting member mounted on said leverto swing thereon on an axis perpendicular to the axis of the lever, a worm member carried by the lever, a worm-wheel segment secured to the'sighting member en' aging said worm whereby the sighting mem er can be swung on said axis by the worm, and means for also swinging the sighting member on an axis transverse to its said axis of movement on the lever.

10. In a si ht for firearms, a frame member'for attacIiment to the firearm, a lever pivoted on the frame member to swing in a orizontal axis, means to swing the lever, a sight member, a pivot member connecting the sight member and said lever, a worm rotatably carried by the lever and prevented from endwise movement, a worm-wheel segment secured to the sight member and engaging the worm to swing the sight member on its pivot upon rotation of the screw, said pivot member being vertically adjustable on the lever to swing the sight member on the axis of said worm.

AMBROSE SWASEY.

Witnesses:

DAVIDQHUNT, J12,

F. F. RICE. I 

